<template>
  <div class="column">
    <div class="column-left">
      <div class="resize-bar"></div>
      <div class="resize-line"></div>
      <div class="resize-content">
        左侧的内容，左侧的内容，左侧的内容，左侧的内容
      </div>
    </div>
    <div class="column-right">
      右侧的内容，右侧的内容，右侧的内容，右侧的内容
    </div>
  </div>
</template>

<script>
export default {};
</script>

<style lang="less">
.column {
  overflow: hidden;
  .column-left {
    height: 400px;
    background-color: #fff;
    position: relative;
    float: left;
    .resize-content {
      position: absolute;
      top: 0;
      right: 5px;
      bottom: 0;
      left: 0;
      padding: 16px;
      overflow-x: hidden;
    }
    .resize-bar {
      width: 200px;
      height: inherit;
      resize: horizontal;
      cursor: ew-resize;
      cursor: col-resize;
      opacity: 0;
      overflow: scroll;
    }
  }
  .column-right {
    height: 400px;
    padding: 16px;
    background-color: #eee;
    box-sizing: border-box;
    overflow: hidden;
  }

  /* 拖拽线 */
  .resize-line {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    border-right: 2px solid #eee;
    border-left: 1px solid #bbb;
    pointer-events: none;
  }
  .resize-bar:hover ~ .resize-line,
  .resize-bar:active ~ .resize-line {
    border-left: 1px dashed skyblue;
  }

  .resize-bar::-webkit-scrollbar {
    width: 200px;
    height: inherit;
  }

  /* Firefox只有下面一小块区域可以拉伸 */
  /* @supports (-moz-user-select: none) {
  .resize-bar:hover ~ .resize-line,
  .resize-bar:active ~ .resize-line {
    border-left: 1px solid #bbb;
  }
  .resize-bar:hover ~ .resize-line::after,
  .resize-bar:active ~ .resize-line::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    bottom: 0;
    right: -8px;
    background: url(./resize.svg);
    background-size: 100% 100%;
  }
} */
}
</style>